A chain reacting pile is a type of nuclear reactor that uses a self-sustaining chain reaction to generate energy by splitting atoms. Synonyms for this term could include an atomic reactor, a nuclear reactor, or a fission reactor. Other similar phrases could include an energy-producing chain reaction, a sustaining pile reaction, or a nuclear power generator. These reactors are commonly used in the production of electricity in power plants, and are an important part of the world's energy infrastructure. While discussions around nuclear power can be controversial, many see it as a valuable technology for meeting growing energy demands and reducing reliance on fossil fuels.